About

About

About MyBuildCalculator

Practical material calculators designed to make DIY and construction planning easier.

What is MyBuildCalculator?

MyBuildCalculator is a collection of practical calculators for DIY, renovation, landscaping and construction planning. The goal is simple: turn project dimensions into material quantities that are easier to understand and easier to shop for.

Instead of forcing users to work through formulas manually, our tools help estimate concrete, gravel, paint, flooring, tile, drywall, roofing, fencing, decking and other common project materials.

Our Approach

Clear inputsUse familiar dimensions, units and material settings.
Practical resultsSee quantities, waste allowances, package counts and optional cost estimates.
Useful explanationsEach calculator explains the formula, assumptions and common limitations.

Why We Built It

Many construction calculations are simple in theory but inconvenient in the middle of a project. Measurements may use different units, materials are sold in full bags or boxes, and a small waste allowance can change what should actually be purchased.

MyBuildCalculator is designed to bring those steps together in one place.

What Our Calculators Are — and Are Not

Our calculators are planning tools. They can help with early estimates and shopping quantities, but they do not replace engineering, architectural plans, manufacturer instructions, site inspections or local building codes.

Accuracy matters: Material density, product coverage, packaging and site conditions vary. Always verify important quantities before ordering or beginning work.

Contact

Found an error, have an idea for a calculator, or want to suggest an improvement? Visit our Contact page.

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How Much Tile Do I Need?

Flooring & Tile Guide Estimating tile starts with the total area you want to cover. Once you know the floor or wall area, you can add a waste allowance and convert the result into individual tiles or full boxes. Quick answer: calculate the surface area, add waste for cuts and breakage, then divide by the coverage of one tile or one box. For many straightforward layouts, around 10% extra is commonly used as a planning allowance. Calculate your tile quantity automatically Enter your project dimensions, tile size, waste percentage and box coverage to estimate how many tiles or boxes you need. Use the Tile Calculator Calculate Surface Area How to Calculate How Much Tile You Need The first step is finding the area of the surface that will receive tile. For a rectangular floor or wall: Area = Length × Width If ...
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How Much Concrete Do I Need for a Slab?

Concrete Guide Estimating concrete for a slab starts with one simple calculation: length × width × thickness. The tricky part is making sure all measurements use compatible units, converting the result to cubic yards, and allowing a little extra concrete for real-world conditions. Quick answer: Measure the slab's length and width, convert the thickness to feet, multiply the three values together, then divide by 27 to convert cubic feet to cubic yards. Adding around 5% to 10% extra is common for planning purposes, although the right allowance depends on the project. Want the answer without doing the math? Enter your slab dimensions into our calculator to estimate cubic feet, cubic yards, metric volume, bag quantities and optional material cost. Use the Concrete Calculator Concrete Bag Calculator How to Calculate Concrete for a Sl...
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How to Calculate Roofing Squares

Roofing & Exterior Guide Roofing materials are commonly estimated in "squares." One roofing square equals 100 square feet of roof surface. To estimate how many squares you need, calculate the actual roof area, account for pitch and add a suitable waste allowance. Quick answer: divide the total roof area in square feet by 100 to get roofing squares. For example, a 1,500 ft² roof equals 15 roofing squares before waste. Want to calculate your roof automatically? Enter your roof dimensions, pitch and waste allowance to estimate roofing squares, shingles and material quantities. Use the Roofing Calculator Square Footage Calculator What Is a Roofing Square? A roofing square is a unit used to measure roof area. 1 Roofing Square = 100 ft² of Roof Area Roofing contractors and material suppliers often use square...
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